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  1.  
  2.  
  3. import java.awt.BorderLayout;
  4. import java.awt.GridLayout;
  5. import java.util.Random;
  6.  
  7. import javax.swing.JButton;
  8. import javax.swing.JComponent;
  9. import javax.swing.JFrame;
  10. import javax.swing.JLabel;
  11. import javax.swing.JPanel;
  12. import javax.swing.JScrollPane;
  13. import javax.swing.JTextArea;
  14.  
  15.  
  16. public class Tintiro extends JFrame {
  17.  
  18. 	Random random = new Random();
  19.  
  20. 	Tintiro() {
  21.  
  22. 		setLayout(new BorderLayout());
  23.  
  24. 		// CENTER に入る方々
  25. 		JComponent dices = new JLabel("さいころの絵");
  26. 		JTextArea textArea = new JTextArea();
  27.  
  28. 		// CENTER の構築
  29. 		JPanel center = new JPanel();
  30. 		center.setLayout(new GridLayout(1, 2));
  31. 		center.add(dices);
  32. 		center.add(new JScrollPane(textArea));
  33. 		add(BorderLayout.CENTER, center);
  34.  
  35. 		// SOUTH に入る方々
  36. 		JButton jb1 = new JButton("まわす");
  37. 		JButton jb2 = new JButton("りせっと");
  38.  
  39. 		// SOUTH の構築
  40. 		JPanel south = new JPanel();
  41. 		south.setLayout(new GridLayout(1,2));
  42. 		south.add(jb1);
  43. 		south.add(jb2);
  44. 		add(BorderLayout.SOUTH, south);
  45.  
  46. 		// "まわす" のアクションリスナー
  47. 		jb1.addActionListener(e -> {
  48.  
  49. 			// 0-5 の乱数を発生させる
  50. 			int n = random.nextInt(6);
  51.  
  52. 			// メッセージを構築する
  53. 			String text = (n + 1) + " が出ました\n";
  54.  
  55. 			// テキストエリアに追加する
  56. 			textArea.append(text);
  57. 		});
  58.  
  59. 		// "りせっと" のアクションリスナー
  60. 		jb2.addActionListener(e -> {
  61.  
  62. 			textArea.setText("");
  63. 		});
  64.  
  65. 		setSize(700,500);
  66. 	}
  67.  
  68. 	public static void main(String[] args) {
  69.  
  70. 		JFrame f = new Tintiro();
  71. 		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  72. 		f.setLocationByPlatform(true);
  73. 		f.setVisible(true);
  74. 	}
  75. }
  76.  
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https://ideone.com/lXXj6c
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Text (text 6.10)
created:
2 years ago
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